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200 W, digital 4-LED channels demonstration board with STLUX385A-controlled current regulation and dimming

The STEVAL385LED4CH demonstration board is a complete and configurable solution to manage four independent high-brightness LED channels using the STLUX385A digital controller. The STLUX385A is a part of the STMicroelectronics®STLUX™ product family and embeds advanced peripherals tailored to generate high resolution PWM signals (SMED).

The STEVAL385LED4CH device implements inversed buck topology to drive each LED channel. The SMED technology integrated in the STLUX385A device regulates the LED current, exploiting the fixed-off-time (FOT) principle. Each channel can output current in the range of 250 mA to 1 A.

The number of LEDs, the current and the PWM dimming working point can be set through the command interpreter, accessible via the serial interface. Dimming can also be manually adjusted via the three on-board buttons.

The demonstration board can be optionally controlled via a DALI interface. The DALI connection board is available separately (part number STEVAL-ILM001V1). The STLUX385A DALI software drivers and application firmware are available.

This demonstration board is available also with an order code STEVAL-ILL057V1.

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Errata Sheet
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Data Brief

Key Features

  • Based on the STLUX385A digital controller
  • Up to 200 W
  • 4 LED channels
  • Adjustable LED current and dimming
  • Adaptive voltage compensation
  • Real-time fault detection and protection (e.g: short or open circuit)
  • Serial interface
  • DALI (optional)

图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DB1921: 200 W, digital 4-LED channels demonstration board with STLUX385A-controlled current regulation and dimming
2.0 499 KB

Application Notes

描述 版本 大小
AN4291: STEVAL385LED4CH: four independent high brightness LED channels using the STLUX385A digital controller
1.0 2,276 KB

Hardware Resources

Bill of Materials

描述 版本 大小
1.0 114 KB

Schematic Pack

描述 版本 大小
STEVAL385LED4CH schematic
1.0 156 KB

样品 & 购买

产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL385LED4CHNRNDSTLUX385A-No availability reported, please contact our Sales officeNot compliant-

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